Home / 21,314.09-29,412.38-11,880.83

Finding the Fourth Proportional to 21,314.09, 29,412.38 and 11,880.83

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Solution

The fourth proportional to 21,314.09, 29,412.38 and 11,880.83 is: 16,394.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.09 : 29,412.38 = 11,880.83 : x
  2. Step 2: Convert to fraction form
    21,314.09/29,412.38 = 11,880.83/x
  3. Step 3: Cross multiply
    21,314.09x = 29,412.38 × 11,880.83
  4. Step 4: Simplify right side
    21,314.09x = 349,443,427.27
  5. Step 5: Solve for x
    x = 349,443,427.27/21,314.09
  6. Step 6: Final answer
    x = 16,394.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.